Floor fan



FIG. 1 is a front elevation view of a floor fan, showing our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a front perspective view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the floor fan that form no part of the claimed design. 

CLAIM The ornamental design for a floor fan, as shown and described. 